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A 16' stopped wooden flute of large scale.
The name is derived from the French word bourdonner, meaning "to buzz".
It is possibly the single most common 16' pedal stop.
The most common name is Bourdon.
It is similar to, and occasionally synonymous with,
the Gedeckt and
the Stopped Diapason.
On theatre organs, the name is bogusly used for an extension of the
Concert Flute, an open stop.

The illustrations are Audsley's. Click on the images for larger images.
The photo is of the 16' Bourdon at Culver Academies, Indiana, USA, courtesy of John Gouwens.

Variants

Examples

Examples of Bourdon and Bordun are extremely common.
Osiris contains 10 examples of Bordone at 8' pitch, and 8 examples at 16'.
Osiris contains two dozen examples of Bordon at 8' pitch, 20 at 16',
and two at 32'.
Osiris contains two dozen examples of Flautado Violón at 8' pitch,
and three at 16'.
Osiris contains 12 examples of Borduna at 16' pitch, and 3 at 8' pitch.
No examples of Bardone, Bassbrummer or Burdo are known.